The forum member claims his source is a former junior high school classmate currently working in Shenzhen, China.
The flex cable looks mostly similar to the latest generation iPhones, but with a few differences.
For example, the headphone jack appears to be larger than those found in the iPhone 5S.
In addition, the flex cable features some extra grounding plates, circuitry and an oval cut out above the Lightning connector, AppleInsider notes.
However, we cannot take for granted the component in question, because the source is not known.